Guardian Security Training

SECURITY, INVESTIGATIONS, TRAINING & MORE Guardian Security Investigation & Training, previously named Guardian Investigations, centrally located on Long Island in Deer Park, NY, was formed in 2007 by Matthew Seifer, a Licensed Private Investigator, ...

SECURITY, INVESTIGATIONS, TRAINING & MORE Guardian Security Investigation & Training, previously named Guardian Investigations, centrally located on Long Island in Deer Park, NY, was formed in 2007 by Matthew Seifer, a Licensed Private Investigator, Registered Armed Guard, and Division of Criminal Justice Services (DCJS) Certified Instructor. For More Information: https://gstny.com/